Vortex Optics is an American company developing optics, gear, and accessories for hunting, bird watching, wildlife watching, outdoor recreational sports, and law enforcement. Vortex products include high-quality binoculars, spotting scopes, riflescopes, and other optical equipment. The Vortex Optics Viper HS PST 6-24x50mm rifle scope features exposed target-style elevation turrets built for dialing elevation at extended ranges. The capped windage turret maintains the scope’s sleek lines and prevents it from hanging up on clothing, rifle cases or pack scabbards. Viper HS PST riflescopes with ebr-1 mrad feature an advanced optical search system highlighted with a 4x zoom range for magnification versatility. A forgiving eye box with increased eye relief gets shooters on target quickly and easily. It was built on an ultra-strong 30mm one-piece machined aluminum tube for increased windage, elevation travel, and optimal adjustment. The Vortex Viper PST maximizes alignment for improved accuracy and optimum visual performance, and ensures strength and waterproofness. O-ring seals prevent moisture, dust, and debris from penetrating the riflescope for reliable performance in all environments, while argon gas purging prevents internal fogging over a wide range of temperatures. The Vortex Viper PST FFP also features a rugged construction, which withstands recoil and impact. Vortex expertly satisfies long-range shooter needs through the 6-24x50mm Viper HS PST FFP rifle scope. Fitted with extra-low dispersion glass, the scope produces extremely clear images of commendable resolution and a wide field of view. Its cupped windage turret maintains high accuracy when shooting at long ranges and prevents the scope from hanging on clothing. Additionally, this Vortex riflescope features an advanced optical system that offers a 4x magnification versatility. The Vortex Viper PST FFP long-range rifle scope features an adjustment graduation range from 1/2 MOA click elevation to 1/4 MOA click windage. This rifle scope also sports a 24 MOA elevation and 12 MOA windage travel per rotation. The Vortex Viper is adjustable to various heights and conditions, with a max elevation adjustment of 65 MOA, zero windage, and max windage adjustment of 42 MOA. Half and quarter minute-of-angle hash markings greatly boost the rifle’s accuracy when estimating distances. The Viper HS riflescope also features a 4.0-inch eye relief. The 30mm main tube is a machined aluminum tube that offers optimum adjustment and increased elevation travel. The aircraft grade aluminum frame means this riflescope is designed for use in any conditions. The one-piece tube design maximizes the versatility of the Vortex Viper riflescope, making it waterproof and fogproof. The Vortex Viper HS LR rifle scope features a first focal plane reticle. The MAG view fiber optic reticle of the Viper Vortex scope provides a highly visible reference point for the magnification setting. The radius bar fiber optic turret rotation indicator provides a highly visible and tactile point of reference for turret rotations. The fast focus eyepiece allows for quick and easy reticle focusing. The riflescope is compact, yet functional for measuring with a length of 15.5 inches and weight of 22.4 ounces. Accessories include a carry case and user manual.